i wouldnt put demasoni or a saulosi in a 10gal, 10gals are too small for african cichlids other then shell dwellers, a single mbuna would be misserable and not do anything, kenyi minimum 55gal with 1 m 4 females, it may be small in the store but fish do grow and they can grow fast, at my work we have some kenyi that hit 3 inches in 3 months